Generac Power Systems MLTS Owner's Manual page 53

Troubleshooting
Troubleshooting the Lights
Only a qualified electrician should troubleshoot or repair
electrical problems occurring in this equipment.
Problem Possible Cause
Mast lights off, Light fixture is too hot
checking outside
Loose lighting
control box
connections
Damaged or loose
electrical cord
Faulty fuel filter
Faulty generator
capacitor
Mast lights off, Loose lighting
checking inside connections
control box
Generator output
incorrect
48
Lights Troubleshooting Guide
Solution
Allow light to cool 10–15 minutes before restarting.
Inspect the connections inside the mast junction box and each mast light
housing/socket.
Inspect the mast electrical cord for damage and check the cord connections
inside the control box.
With engine running and lights off, measure voltage and frequency at the
GFCI receptacle. Voltage should indicate 120VAC ± 5%, and frequency
should indicate 60.7 Hz ± 5%. If frequency and voltage are both low
(<114VAC, <58 Hz), replace the fuel filter.
Measure the capacitance of the generator capacitor. If measurement is
outside rating (as indicated on the capacitor), replace the capacitor.
Inspect the connections inside the control box.
Check the incoming voltage to the ballast driver by checking the available
voltage on the GFCI receptacle. Incoming voltage should be 120V ± 5V. If
voltage is incorrect, the generator may require service.
WARNING
Electrocution. Potentially lethal voltages are generated
by this equipment. Render the equipment safe before
attempting repairs or maintenance. Failure to do so
could result in death or serious injury.
Owner's Manual for Mobile Light Tower
(000187)